The case provides a useful compilation of the criteria for characterising litigation as 'public interest litigation' for costs purposes, applying the three-step approach from Caroona Coal Action Group. An incorporated association with a small membership, whose members live remotely from the subject site and have only intellectual or philosophical interests, will not satisfy the public interest litigation threshold. A person who voluntarily gives an undertaking for security for costs with knowledge of its consequences cannot later claim manifest injustice from the existence of that undertaking.
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